Plow-lift for gang-plows.



L: S. HACKNEY.

PLOW LIFT FOB. GANG PLOWS.

APPLICATION FILED MAY 31, 1912.

Patented July 21, 191

2 sHnETssnEET 1.

LU line 3 s e s Patented July 21, 1914.

2 SHEETSSHEET 2.

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LESLIE s. HACKNEY, on ST. PAUL, mnvunsora.

. PLOW-LIFT FOR GANG-FLOWS.

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firiginal application filed August 14,

Specification of Letters Patent. 1911, Serial No. 643,922. Divided and Patented July 21, 1914. this application filed May 31,

' 1912. Serial No. 700,655. a

To all whom it may concern:

Be it known that I, Lnsnm S.- HAC NEY, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented new and useful Improvements in Plow-Lifts for Gang- Plows, of which the following is a specification.

My invention relates to improvements in plow lifts for gang p'lows. Its object is to provide simple and efiicien't means for raising a series of plows manually or-by power, and for lowering and controlling the same in their downward movement.

A further object is to provide in such a device means for automatically stopping the upward movement of the plows when ,elerated by power and adjustable means for limiting the downward movement of said plows.

This application is a division of an a ppliant-ice for patent on motor plows, Serial llnmher $513,922 filed by me on August 14, lldll,

in drawings Figure 1 is a side view of mater plew showing my improved mecha nism in eperative connection with a gang of plows; F 2 is a plan view in detail of the for limiting; the downward morementnf the plows; Fig. 3 is a sectional View taken onthe line33 ofFig. 2; Fig. l is a View in detail of my improved lifting meehanisun and Fig. 5 is an end eleration of the same.

Rtfti'l'lififi to the eccompmying drawings, I have used the reference numeral to inte the frame cf a traction vehicle. The war shaft 11 is arranged en the heme 10 is provided with a spool 12 loosely ted thereon. The an shaft 13 is it mounted beneath the e 10 and provided with a plurality of M.

@ables 15 are centrally attached to each of the plcw 1G and extend to drums 1a aha-v the plow bodies; to which they are respectively connected. The cable 17 is wonnd at one end'on the l 12 and at its other end about the 18 on the shaft 13. The rotation of the spool 12 in one direction l winds the cable 17, thereon and rotates the urum 13, thus winding the cahles 15 en the drums 1st and raising the plcws, The citation of smTd spoel 12 in the opposite direction permits the unwinding of the cables 15 from the drums 14, thus lowering the plows. v

' Means are provided for manually rotating the spool 12 to raise the plows.

rearward movement of the lever 24 causes the engagement of said dog 22 and ratchet 20, and the continued reciprocation of. said handlever turns the spool 12 to-raise the plows. The dog 25 on the framelO engages the ratchet 20 and prevents the rotation of said spool to lower the plows. 1 Means are also provided for rotating the spool 12 by power to raise the plows. To this end, the collar 26, having a recess 27 in its face, is loosely mounted on the power shaft 11 and is held-from rotationfthereon by the arm 28 which is fixed to. the frame 10. The collar 29 having a cam 30 conforming with said recess 27 is loosely mounted on said shaft and is provided with an arm 31, said arm being connected by the rod 32 to the pedal 33. The clutch driving member 34 feathered on the shaft 11 is held by the spring from engagement with the clutch driven member 36 on the spool 12 and in a position adiacent to the collar 29. Bypressing the pedal 33 the cam collar 29 is turned and the movement of the cam 30 in the fixed recess 27 causes a lateral separation of the collars 26 and 29, when the latter is rotated onthe power shaft 11, and causes the engagement of the clntnh'members 34 and 36 against the action of. the spring 35 whereby the spool 12 is revolved to raise the plows. The spring 35 returns the collar 29 to its normal position and diseugages the clutch members 34 and 36 when the pedal 33 'is released. A 'safety stop to limit the upward movement ofthe plows when raised by power is provided and comprises a bell crank 37 pivotally connected to the frame 10. Said crank is arranged with one crank arm 38 in the path of the arm 31 on the cam collar 29 and its'other crank arm 39 in the path of one of the plow beams 40. When the arm 39 is moved upwardly by said plow beam For this purpose said spool is provided with a drum .19 and ratchet 20. The collar 21 is loosely mounted on the drum 19 and supports the dog 22. This dog is connectedby the rod 23 to the hand lever 24 and normally rests out. ;of engagement with the ratchet 20. The

. ing a slot 45.

the crank arm 38 strikes the arm 31 and moves the cam collar 29 back into its normal position against the pressure on the pedal 33, brought to bear by the operator in raising the plows, thus disengaging the clutch members 34 and 36 to stop the rotation of the spool 12.

The plows fall by gravity when released, and their movement is controlled as follows: The dog 25 which prevents the rotation of the spool 12 in a direction to lower the plows is connected by the rod 41 to the pedal 42. The outer periphery of the clutch driven member 36 forms a drum,43 and on this drum is mounted a brake shoe 44 hav- T he rod 41 which is connected to the dog 25 extends into this-slot 45. The spring 46, arranged within the shoe 44, engages the rod 41 and yieldingly holds said shoe in position on the drum 43 and the dog 25 in engagement with the ratchet 20. A slight movement of the pedal 42 disengages the dog 25 from the ratchet 20 and releases the plows, while a further movement of said pedal engages said brake shoe with the drum 43 to control the speed of the plows in their downward fall. I have also provided means for limiting the downward movement of the plows. For this purpose, the cable 47 is wound at one end about the drum 48 on the shaft 18 and is connected at its other end to a spring 49. The attachment of the cable 47 to the drum 48 is such that the rotation of the shaft 13 td lower the plows turns said drum in a direction to wind said cable. The spring 49 which is fixed to the frame 10 keeps the cable 47 taut regardless of the rotation of the drum 48. The clamp 50 on the cable 47 moves between the flanges 51 of the support 52 and engages the stop 53 as the plows are lowered. This stop is adapted to be set in any of the pairs of perforations 54 in the flanges 51, and thus limits the working depth of the plows.

In the operation of my device, the operator presses the pedal 33 to raise the plows by power, the elevation of said plows being automatically discontinued by the operation of the crank 37 which disengages the clutch members 34 and 36. The hand lever 24 is reciprocatcd to rotate the spool 12 and thereby raise the plows by hand. The stop 53 is adjusted in the flanges 57 to limit, as desired, the downward movement of the pl'ows.

Having described my invention, what I claim as new and desire to protect by Letters Patent is:

1. In a device of the class described, the combination of a frame carrying plows, a drum shaft on therframe, drums on said shaftha cable for each plow attached at one end thereto and wound at its other end on one of said drums, means for turning said shaft to wind said cables on their respective drumst o'raise said. plows, a cable attached at one end to one of said drums and connected at its other with said frame, said cable being arranged to be wound upon its drum as the plo ws are lowered and adapted to stop the rotation of said drum shaft, thus limiting the fall ofsaid plows.

' 2. In a device of the class described, the combination of a frame carrying plows, a drum shaft on the frame, drums on said shaft, a cable for each plow, attached at one end' thereto and wound at its other end on one of said drums, means for turning said shaft to wind said cables on their respective drums to raise said plows, a spring on the frame, a cable attached at one end to said spring and wound at its other end on one of said drums and means for stopping the movement of said cable whereby the rotation of said drum shaft is discontinued and the fall of the plows limited.

3. In a device of the class described, the

-combination of a frame carrying plows, a

drum shaft on the frame, drums on said shaft, a cable for each plow attached at one end thereto and wound at its other end on one of said drums, means for turning said shaft to wind said cables on their respective drums to raise said plows, a spring on the frame, a cable attached at one end to said spring and wound at its other end on one of said drums, a clamp on the cable, a sup port on the frame, a stop adjustable in said support and adapted to engage said clamp and limit the movement of said cable in one direction.

4. In a device of the class described, the combination of a frame carrying plows, a

spool revoluble on said frame, a drum shaft on the frame, drums on sa'idshaft, a cable connecting said spool and one of said drums, a cable connecting each plow With one of said drums, means for rotating the spool to raise said plows, means for locking the spool to hold said plows in elevated position, and adjustable means for discontinuing the rotation of the drum shaft in lowering the plows .to thereby limit their working dept 1s.

5. In a device of the class described, the combination of a frame carryin plows, a spool revoluble on said frame, a drum shaft on the frame, drums on said shaft, a cable connecting said spool and one of said drums,- a cable connecting each plow with one of said drums, means for rotatingthe spool to raise the plows,- a spring on the frame, a cable attached at one end to said spring and wound at its other end on one of said drums, and means for stopping the movement of said cable whereby the rotation of said drum shaft is discontinued and the fall of the plows limited.

G. In a device of the class described, the combination of a frame carrying plows, a spool revoluble on said frame, a drum shaft on the frame, drums on said shaft, a cable connecting said spool and one of said drums a cable connecting each plow with one oi said drums, means for rotating'the spool to raise said plows, a spring on the frame, a cable attached at one end to said spring and wound at its other end on one of said drums, a clamp on the cable, a support on the frame, a stop adjustable in said support and adapted to engage said clamp and limit the movel0 ment of said cable in one direction.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

LESLIE S. HACKNEY.

Witnesses:

ASHLEY GOFFMAN, J. KAVANAGH.

Copies of this patent may be obtained for five cents each, by addressing the flea-emissions: of Eatents,

Washington, D. 0. 

